Method of joining metals



' (No Model.)

I. G. STARK. METHOD OF JOINING METALS..

No. 534,979. 4 Patented Feb 26, 1395.

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PATENT FRANK G. STARK, OF ST. LOUIS, MISSOURI.

METHOD OF JOINING METALS.

SPECIFICATION forming part of Letters Patent No. 534,979, dated February26, 1895. Application filed October 10, 1893, Serial No. 17 4 (N05116031181189 To aZZ whom it may concern:,

Be it known that I, FRANK e. STARK, a citizen of the United States,residing in the city of St. Louis, State of Missouri, have invented acertain new and useful Method of Joining Metals, of which the followingis a full, clear, and exact description, reference being had to theaccompanying drawing, forming a part of this specification, wherein thefigure represents a sectional view illustrating my improved method.

My invention relates to a new and useful method of joining metals, andconsists, essentially, in so forming the contiguous ends of the metalsto be joined in such manner that molten metal of similar nature maycirculate therethrough until fusion of the contiguous ends of the metalsto be joined takes place, at which time the same will form a homogeneousmass, making a joint atthe ends without a break and perfectly solid. Toaccomplish this, I preferably take the ends to be joined and formtherein suitable channels, preferably in the shape shown in the drawing,and lead to and from the entrances and exits of the two channels in thetwo ends, suitable gates formed in the sand of the flask. This forms acontinuous channel through the ends of the two pieces through which themetal may circulate.

In the drawing, A,indicatesthe flask in the sand of which is embeddedone of the pieces to be fused and the end of the other, or both,

may be buried as may be desired. These pieces I havelettered, B, and, O.In the contiguous ends of these pieces, I form connecting channelsarranged in longitudinal alignment and having lateral terminals and leadto said terminal gates, D. The flask is then preferably tilted or cantedto one side, so that the metal may easily run off, and into the upperchannel, D, I pour from a suitable ladle or crucible, E, molten metalwhich passes through the channel formed in the pieces to be joined,whence it passes through the exit end of the channel over the flask intoa suitable receiving ladle or crucible, F. When the ladle or crucible,E, has been emptied of its contents and the same have passed through thecontiguous ends of the two metals to be joined, as above described, andare received into the crucible, F, the metal from the crucible, F, isthen run through the same course again, the crucible, E, in this latterinstance acting as the receiving crucible. This circulation is kept upuntil the heat and contact of the molten metal with the ends of the twometals to be joined completely fuses the same, at which time thecirculation may cease, and the parts be allowed to cool, when theresultant joint will be found to be a solid unbrokenhomogeneous mass.

By arranging the channels in longitudinal alignment the molten metalpasses the joint at right angles and thereby heats the same uniformlythroughout, and by forming the lateral terminals for the channels, thejoint is further strengthened, the metal remaining .in the channelacting as a key to prevent either lateral or longitudinal movement ofthe parts. I

Having thus described myinvention, what I claim, and desire to secure byLetters Patout, is

The herein described method of joining contiguous faces of metal bodieswhich consists in forming aligning channels with lateral terminals inthe bodies, placing the faces of the bodies in contact with each other,introducing the same into a suitable flask, and cansing anundividedstream of molten metal to pass through the channel in one ofthe bodies across the joint at right angles and into and from thechannel in the other body, substantially as described.

In testimony whereof I hereunto affix my signature, in presence of twowitnesses, this 7th day of October, 1893.

FRANK G.STARK.

Witnesses:

F. R. CORNWALL, HUGH K. WAGNER.

